1) must I must get up early tomorrow morning, I haven’t done my homework We must help our mother with the housework You must visit me and see my new flat The manager must take measures to ensure safety Even though I don’t like her, I must admit she’s the most intelligent person I’ve ever met 2) have to We have to be at school at sharp otherwise our teacher will scold us Students have to wear blue uniforms in this school You’ll have to pay the tickets in advance We have to be home by 12 I’ll have to work next weekend G A R M R M A MUST – the obligation comes from the speaker or writer of the sentence It is stronger than HAVE TO and indicates urgency HAVE TO – the obligation is external, it comes from outside the speaker, other people decide for the speaker what to HAVE GOT TO – similar in meaning with HAVE TO, used in spoken English MUSTN’T – prohibition DON’T / DOESN’T HAVE TO – lack of obligation and necessity HAD TO – obligation in the past MUST + perfect infinitive – deductions about the past not past obligation (He must have arrived.) Fill in must or have to: You ………… … take a final decision, it’s no use putting off things anymore! The two obstinate frogs were told they ………… end their feud I ………….…… deliver the painting earlier than I expected, my customers want it in a couple of weeks You ………….… be 18 to get your driving license I ……………… clean up my room, it looks like a pigsty Students ………… …… leave the classroom as clean as it was when they arrived You ………………… give up smoking, it’s not healthy at al!!! You ………………… sign this form, sir! I ………………… lose weight, I’m so fat! A R M R M G A Fill in mustn’t or don’t /doesn’t have to: Students ……………… gossip during classes! “We ……………… our homework if we don’t want to, right?” “Wrong!” You ………………… smoke in here! You …………………… talk to strangers! My employees ……………… be late at work If they are, they lose their jobs You ………………… try so hard, after all it’s only a friendly match! You ………………… it if you don’t feel like! Bring me the book when you have finished it, you ……… ……… give it to me right away I love holidays because I ………………… get up early In this sport one ……………… commit excesses if he / she has high aspirations ANSWERS 1) must must have to have to must have to must have to must 2) mustn’t don’t have to mustn’t mustn’t mustn’t don’t have to don’t have to don’t have to don’t have to mustn’t mustn’t